Issue Description:

When crafting a tinkers tool in a tool forge, a crash occurs. This has only started happening with the 4.1.5 update.

Affected Versions (Do not use "latest"):

• Minecraft: 1.12.2
• Forge: 14.23.2.2612
• Crafttweaker: 4.1.5

Your most recent log file where the issue was present:

https://gist.github.com/justinrusso/b951a1626ba75701c86856adc560275c